Sheet piler



July l13 192s. 1,592,164

A. K. TAYLOR SHEET PILER Filed June '7, 1924 m'mum v j l //////.23. l,

ARTHUR K. TAYLOR, OF BALTEEOBE, IVIAR'ZLAND, ASSG-TR TO Tit-IE UNITEDSTATES ERINTNG AND LITHOGRAH CGMEAY, A CORE'RATIN O1? (EH10.

l-IEET JELER.

Application filed .Tune 7,

My invention relates to improvements in a sheet piler or lay hoy, and itis intended to he an improvementover the general type of sheet pilersdescribed and claimed in the patent granted to l?. E. Rich on July 13,1915, numbered 1,145,921, although it is not limited in its applicationto such a machine. It often `happens in the use of a piler in `Whichslowacting gears control the position of the receiving,` table, that the endof a run ontheapress is'reached beforeV the piling table isfull. .andconsequently, before it is lowered onto the trucks under the tahle. Thetable, when even partially filled, is so heavy that it would heimpracticahleto handle it manually. lt is customary, when it isdesirable to lon'er the table more rapidly than the sheet-deliverymechanism driven from the printing machine does it, to turn some of thedriving gears hy hand, hat it has been found to he a very slow process,and l have therefore devised a means of lowering the table more rapidlyWithout doing away with the advantages of the slovv acting; gears. lattain this, andother objects and advantages, hy the mechanismillustrated in the accompanying` drawings, in `which- Figure 1 is a`vertical side view of the entire machine; Fig'. 2 is a vertical endview With certain parts hrolien away. Fig. 3 is ay partial sectionalview of the gearing on line 3-8 of Fig. 2 looking in the direction ofthe arrows; Fig'. 4 is a detail View, showing-the pawl diseno'agingmeans. Figure 5 a detail view of the brake mechanism on line of Figure2.

Similar immerals refer to similar throughout the several views.

Table or plate 11 is supported on T heanis 21, lnivinnl at their endshooks 20, over which s 19 of the inner ends 18 of chains part-s sed.These chains are reeved over pulevs 17 having' notched peripheries tohold them. The outer ends 22 of the chains have hand grips n3. Pulleys`1?' are vfast on shafts 15, which are mounted in hearings 14 onhorizontal hars 12 `supported on standaids-13.

vShafts 'have ratchet Wheels 24 fast on them near their outer ends.lWorm Wheels 26 are rotatably mounted on the shafts. ljivoted totheseWorm Wheels, and held in engaging position by springs, are payvls 25coacting with their respective ratchet Wheels.

'Patvls 25 have outwardly extending pins .ei-'ns the rotation of 1324.Serial N0. 718,509.

as-shon'n in Figs. 3 and 4. Fast to Worm Whetis 26 are housings 44 Whichhave rolled over outer rims, near shafts 15, as shown at 45. Under theserims are rotatably mounted rings 46 having` handles 47 screwed to them.Rings 46 have notches 48 and 49 in their rims. vins 43, when resting innotches 48, permit their pawls to operate on the teeth the ratchetvvheels, hut when rings 46 are rotated so that the pins are in notches49, the pavvls will he raised out of operative contact with theirratchet wheels.

Supporte-d in hearings on brackets across the hack of the machine is ashaft QS having worms 27 fast to it Which mesh with 'worm wheels 26. @none end of shaft 28 is a ratchet wheel .Pivoted to the sha-ft is a lever32 having pivoted to it at 31 a pawl El() which works on ratchet Wheel29. liever has a count .r-weight To lever 32 is pivot-ed a rod S311-,which is adjustahly and pivotally held in arm 35, which in turn, ispivoted to the other-end of the machine at 36 and isoperated from' the:printing press hy rod 3?. To the other end of shaft 8 a 'long handcrank 4Q is fast.

Beyond Worm Wheels 26 and fixed on shafts 15 4are ratchet Wheels 50, androtatahly mounted on the shafts are Worm Wheels 51, having snring heldpaWls 52 .pivoted thereto and Working` on ratchet Wheels 50. L worinshaft, 53, With Worms 54 is mounted in hearings on brackets acrosslthehack of the machine; this shaft is parallel Wi th shaft Q8. rlhe Worms54 mesh with the Worm Wheels 51. rlhe lead of Worms 54 is much greaterthan that olf Worms 2T; it is, in fact, so great that the Worms can heturned by the rotation of the worm Wheels 51.

r1 drum brake 55 of conventional design with the ydrum keyed on shaft 53and with a pin handled screw on the hralre hand govthe shaft. The hralrehand is held from rotation hy the projection fffmo fing' around andcoming into contact with the shaft 2S when it is in use. TWhen it is notin use, the pin handled screw is loosened and the brake hand andprojection 56 hang' freely on the drum.

Inoperation, the table is gradually lowered by the step-hy-stepmechanism driven from the press. illhen this is occurring` the hralzeisreleased, the projection 56 hanging down, freely, and shaft 53 isrotatedhy the ratchet Wheels pushing around the VWorm wheels 5l by meansof pawls 52, and the worm wheels 5l in turn actuating worms 54 lined onshaft The machine is usually at rest when it is desired to lower thetable rapidly. And when it is desired to lower the table rapidly the pinhandled screw on the brake band is tightened and shaft QS is reversclyrotated by crank l2 sufficiently to allow the pawls to be raised, afterthat pr jiectiou 56 moves around freely until it comes into Contact withshaft QS, and then the brake band remains stationary. The table thencrops gradually to the trucks placed beneath, being restrained andregulated in its rapidity of dropping by the tightness of the brakeband. IVhen it is desired to raise the table, handles 23 on the chainsare pulled.

IVhile I have shown and described one embodiment of my invention it willbe understood that this is shown for the purpose of illustration onlyand that I do not desire to be limited to the details of constructionshown and described, for obvious modifications will occur to a personskilled in the art.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent, is

l. In a sheet piler, a table adapted to receive sheets, automatic meansacting in timed relation with the delivery of sheets to the table tolower the same, means to disconnect said automatic lowering means, and

frictional means to govern the lowering of said base when said automaticlowering means is disconnected.

2. In a sheet piler, a vertically movable table, shafts operativelyconnected to said table, automatic means to drive said shafts, gearsconnecting said shafts and automatic driving means, manually operablemeans to disconnect said automatic driving means from said shafts, andmeans geared to said shafts to control their operation when saidautomatic driving means is disconnected.

3. In a sheet piler, a vertically movable table, shafts operativelyconnected to said table, automatic means to drive said shafts, gearsconnecting said shafts and automatic driving means, means to disconnectsaid automatic driving means from said shafts, a control shaft geared tosaid first-named shafts, and unidirectional power transmission meansbetween said control shaft and said first-named shafts.

4f. In a sheet piler, a vertically movable table, Shafts operativelyconnected to said table, gears on said shafts, a worm gear shaft, wormson said worm gear shaft which mesh with the gears on said first-namedshafts, automatic means to drive said worm gear shaft, means todisconnect said automatic driving means from said rst-named shafts, andmeans geared to said first-named shafts lo control their operation whensaid automatic driving means is disconnected.

5. In a sheet piler, a vertically movable table, shafts operativelyconnected to said table, on said shafts, a worin gear shaft. worms onsaid worm gear shaft which mesh with the gears on said first-namedshafts, ai' omatic means to drive said worm gear 4, means to disconnectsaid automatic ing means from said first-named shafts, other on saidfirst-named iafts, a second worm gear shaft, worms on said second woringear shaft which mesh with the said other gears on said first-namedshafts, means to control the operation of said second worm gear shaftwhen said automatic driving means is disconnected.

(l. In a sheet piler, a vertically movable. table, shafts operativelyconnected to said table, gears on said shafts, a worm gear shaft, wormson said worm gear shaft which mesh with the gears on said first-namedshafts, auton'iatic means to drive said worm gear shaft, means todisconnect said auomatic driving means from said first-named shafts,other gears on said first-named shafts, a second worm gear shaft, wormson said second worm gear shaft which mesh with the said other gears onsaid first-named shafts, the lead of the worms of said second worm `yearshaft being greater than the lead of the worms of said iirst worm gearshaft.

7. In a sheet piler, a vertically movable shafts operatively connectedto said ile. automatic means to drive said shafts, y connecting saidshafts and automatic nriving means, pawls and ratchet wheels be tweensaid gears and said shafts, means to ditconnect the pawls from theirrespective ratchet wheels, and means geared to said shafts to controltheir operation when said pawls are disconnected from their respective.ratchet wheels.

8. In a sheet piler, a vertically movable shafts operatively connectedto said automatic means to drive said shafts. u connecting said shaftsand autoinatiidriving means, pawls and ratchet wheels he tween saidgears and said shafts, nieans lo disconnect the pawls from theirrespective ratchet wheels, and means geared to said shafts, includingother pawls and ratchet wheels, to control their operation when saidfirst-named pawls are disconnected from their respective ratchet wheels.

il. In a. sheet piler, a vertically movable table, shafts operativelyconnected to said table, automatic means to drive said shafts, gearsnormally connecting said shafts and automatic driving means,unidirectional clutches between said gears and said shafts. and meansgeared to said shafts to control their operation when said gears andsaid shafts are disconnected.

lO. In a vertically movable platform,

lll)

means for normally lowering said platform at a slow rate of speed, meansto disconnect said first named means, additional means to regulate thelowering of said platform at a higher rate of speed when said firstnamed means is disconnected.

ll. .ln a vertically movable platform, means for normally lowering saidplatform at a slow rate of speed, said means including a driving shaftand driven shafts, means to disconnect said driving shaft from saiddriven shafts, additional means connected to said driven shafts toregulate the lowering of said platform at a higher rate of speed whensaid driving shaft is disconnected from sai d driven shafts.

l2. In a vertically movable platform, means, including driven shafts,for normally lowering said platform at a slow rate of speed, means todisconnect said first named means, a shaft geared to said driven shaftsand brake mechanism on said shaft to regulate the lowering of saidplatform at a higher rate of speed when said first named means isdisconnected.

ARTHUR- K. TAYLOR.

